Miniature rose plant named ‘KORaroma06’

ABSTRACT

‘KORaroma06’ is a new and distinct variety of  Rosa hybrida  which is characterized by the combination of a compact and bushy growth habit, a moderately vigorous rate of growth, good resistance to many rose diseases, panicles bearing five to six deep pink flowers, very double flowers, and strongly fragrant flowers. The new variety propagates successfully by stem cuttings and grafting and has shown to be uniform and stable in the resulting generations from asexual propagation.

Latin name of genus and species: The Latin name of the genus and speciesof the novel variety disclosed herein is Rosa hybrida.

Variety denomination: The inventive variety of Rosa hybrida disclosedherein has been given the variety denomination ‘KORaroma06’.

STATEMENT REGARDING PRIOR DISCLOSURES BY THE INVENTOR UNDER 37 C.F.R.1.77(B)(6)

The first public disclosure of the claimed plant was made in January of2016 at the 2016 IPM horticulture tradeshow in Essen, Germany where itwas displayed by the inventor amongst a collection of other rosecultivars. The claimed plant was not specifically identified by name inthe display. ‘KORaroma06’ was not publically available or sold prior toone year before the date of the instant application.

BACKGROUND OF THE INVENTION

Parentage: The Rosa hybrida variety ‘KORaroma06’ is the result of acontrolled cross-pollination breeding program carried out by theinventor in Klein Offenseth-Sparrieshoop, Germany. The objective of thesaid breeding program was to create a new and distinct rose plant withunique qualities, such as:

-   -   1. A compact and bushy growth habit and uniform flowering when        grown as a potted floral plant; and    -   2. Abundant, long-lasting, and recurrent deep pink flowers; and    -   3. Attractive foliage; and    -   4. Resistance to diseases encountered in greenhouse and nursery        culture.        This combination of qualities is not present in prior rose        cultivars known to the inventor. These objectives have been        substantially achieved and in that distinguish ‘KORaroma06’ from        all other varieties known to the inventor.

‘KORaroma06’ is a seedling selection which resulted from the controlledpollination of an unnamed Rosa hybrida seedling developed and owned bythe same inventor, the seed parent, with Rosa hybrida ‘KORpot028’ (U.S.Plant Pat. No. 25,004), the pollen parent, during the summer of 2013. Aspart of a rose development program, Tim-Hermann Kordes germinated seedsfrom the aforementioned hybridization during the following winter andconducted evaluations and observations on the resulting seedlings in acontrolled environment in Klein Offenseth-Sparrieshoop, Germany. Theresulting seedlings exhibited distinctive physical and biologicalcharacteristics. The new rose plant was selected as a single plant inMay of 2014 from the seedling beds due to its superior characteristicsand asexually propagated for further evaluation. This new anddistinctive rose variety was given the name ‘KORaroma06’.

Asexual Reproduction: ‘KORaroma06’ was first asexually propagated by budgrafting in June of 2014 at the inventor's nursery in KleinOffenseth-Sparrieshoop, Germany. Subsequently, ‘KORaroma06’ has beensuccessfully propagated by stem cuttings in Jackson County, Oreg. Theseinitial and other subsequent propagations conducted in controlledenvironments demonstrate that ‘KORaroma06’ reproduces true to type insuccessive generations of asexual reproduction.

SUMMARY OF THE INVENTION

The following characteristics have been repeatedly observed andrepresent the distinguishing characteristics of the new Rosa hybridacultivar ‘KORaroma06’. These traits, in combination, distinguish‘KORaroma06’ as a new and distinct cultivar.

-   -   1. Rosa hybrida ‘KORaroma06’ exhibits a moderately vigorous        growth rate; and    -   2. Rosa hybrida ‘KORaroma06’ exhibits a compact, bushy growth        habit; and    -   3. Rosa hybrida ‘KORaroma06’ exhibits good resistance to powdery        mildew, blackspot and rust diseases; and    -   4. Rosa hybrida ‘KORaroma06’ exhibits panicles of 5 to 6 deep        pink flowers held stiffly upright; and    -   5. Rosa hybrida ‘KORaroma06’ exhibits very double flowers of        large size for a miniature rose; and    -   6. Rosa hybrida ‘KORaroma06’ exhibits flowers with strong        fragrance.

BRIEF DESCRIPTION OF THE DRAWING

The accompanying color drawing shows as true as is reasonably possibleto obtain in color photographs of this type, the typical characteristicsof the buds, sepals, reproductive organs, flowers, leaves, prickles, andstems of ‘KORaroma06’, taken from a one year old plant.

DETAILED BOTANICAL DESCRIPTION

The following is a detailed botanical description of a new and distinctvariety of Rosa hybrida known as ‘KORaroma06’, based upon observationsmade in April of 2016 from one year old, greenhouse-grown containerplants in Jackson County, Oreg. Those skilled in the art will appreciatethat certain characteristics will vary with older or, conversely, withyounger plants. ‘KORaroma06’ has not been observed under all possibleenvironmental conditions. Where dimensions, sizes, colors and othercharacteristics are given, it is to be understood that suchcharacteristics are approximations or averages set forth as accuratelyas practicable. The phenotype of the variety may differ from thedescriptions set forth herein with variations in environmental, climaticand cultural conditions. Color notations are based on The RoyalHorticultural Society Colour Chart, The Royal Horticultural Society,London, 2001 edition except where common terms of color are used.

A botanical description of ‘KORaroma06’ and comparisons with the parentsand closest known comparator variety of Rosa hybrida are provided below.

-   General plant description:    -   -   Growth rate.—Moderately vigorous.        -   Growth habit.—Compact, bushy.        -   Mature dimensions.—25 cm tall and 20 cm wide, when grown as            a 17 cm pot plant.        -   Cold hardiness.—Unknown.        -   Propagation.—Stem cuttings and bud grafting.        -   Disease resistance.—Good resistance to powdery mildew            (Sphaerotheca pannosa), blackspot (Diplocarpon rosae), and            rust (Phragmidium sp.) diseases under normal growing            conditions in Jackson County, Oreg.-   Root system:    -   -   Type.—Fibrous root system.        -   Branching.—Freely branched.        -   Density.—Moderately dense.        -   Distribution.—Roots distributed evenly throughout the soil            profile, from shallow to deep.-   Stems:    -   -   Stem color.—Young stems are Yellow-Green Group 146B; mature            stems are Yellow-Green Group 146A.        -   Anthocyanin intonations.—Intonations of Greyed-Purple Group            187B are present on young stems.        -   Stem surface texture.—Both young stems and mature stems are            smooth.        -   Stem dimensions.—Typical mature stems are approximately 35            cm long and 3 to 5 mm in diameter.        -   Prickles.—Incidence — Typically 5 prickles per 10 cm of            stem, on average. Size — Average length is 4 mm long.            Immature prickle color — Greyed-Red Group 181C. Mature            prickle color — Greyed-Red Group 179C. Shape — Deeply            concave. Texture — Smooth.-   Leaves:    -   -   Arrangement.—Imparipinnate compound leaves; mature axillary            leaves typically with 7 leaflets, yet leaves with 5 leaflets            are regularly observed on the distal portion of stems.        -   Attachment.—Petiolate.        -   Dimensions.—125 mm long and 80 mm wide.        -   Abundance.—Very abundant; normally with 25 to 30 leaves.        -   Stipules.—Size — 15 mm long and 6 mm wide. Stipule color —            Green Group 137C. Anthocyanin intonations — None. Stipitate            glands — A limited number of stipitate glands are present on            the abaxial surface and along the margins. Margins — With            stipitate glands. Texture, adaxial surfaces — Glabrous.            Texture, abaxial surfaces — Glabrous. Apex — Apiculate. Base            — Winged.        -   Petiole.—Length — Average 8 mm. Diameter — Average 1.5 mm.            Petiole color, adaxial surface — Yellow-Green Group 146B.            Petiole color, abaxial surface — Yellow-Green Group 146C.            Anthocyanin intonations — None. Margins — With occasional            stipitate glands underneath and slight pubescence on the            center rib. Prickles — None present. Stipitate glands — A            very limited number of stipitate glands are present. Texture            — Glabrous with the exception of the center rib which is            slightly pubescent. Strength — Strong.        -   Rachis.—Length — Average 15 mm. Diameter — Average 1.5 mm.            Color — Yellow-Green Group 146B. Anthocyanin intonations —            Intonations of Greyed-Orange Group 176C are present on            juvenile foliage. Margins — With sparse stipitate glands.            Prickles — A few small prickles on the abaxial surface.            Stipitate glands — A limited number of stipitate glands are            present on the upper margin and also underneath at the point            of leaf attachment. Texture — Glabrous with the exception of            the center rib which is slightly pubescent.        -   Leaflets.—Dimensions — Average size of the terminal leaflet            is 50 mm long and 35 mm wide. Shape — Ovate. Apex — Acute.            Base — Obtuse. Margins — Finely serrated; no undulation.            Texture, pubescence, and luster; adaxial surface — Smooth,            glabrous, and semi-glossy. Texture, pubescence, and luster;            abaxial surface — Smooth, glabrous, and matte. Juvenile            foliage color, adaxial surface — Yellow-Green Group 146A.            Juvenile foliage color, abaxial surface — Yellow-Green Group            146B. Mature foliage color, adaxial surface — Yellow-Green            Group 147A. Mature foliage color, abaxial surface —            Yellow-Green Group 147B. Anthocyanin intonations —            Intonations of Greyed-Purple Group 185A to 185B are present            on the center rib of both the adaxial and abaxial surfaces            of the juvenile foliage. Venation — Reticulate. Petiolule —            Dimensions — 3.0 mm long and 1.0 mm in diameter. Petiolule            color, adaxial surface — Yellow-Green Group 146C. Petiolule            color, abaxial surface — Yellow-Green Group 146D. Prickles —            None observed. Margins — A few stipitate glands are present            on the upper margins. Texture, adaxial surface — Smooth.            Texture, abaxial surface — Smooth with a limited number of            stipitate glands.-   Inflorescence:    -   -   Inflorescence type.—Panicles which bear 5 to 6 flower buds.            Flowers are held stiffly upright.        -   Blooming habit.—Recurrent; floriferous.        -   Size.—100 to 120 mm tall and 140 mm wide, on average.        -   Peduncle.—Length — 100 to 150 mm average length. Diameter —            3.0 to 5.0 mm average diameter. Color — Yellow-Green Group            146A. Anthocyanin intonations — None. Strength — Very            strong. Surface — Smooth; glabrous.-   Flowering laterals: Present below the initiation of inflorescence.    Generally 1 to 2 flowering laterals are present, with 1 to 4 flowers    per flowering shoot.-   Flower bud:    -   -   Bud form.—Long; pointed ovoid.        -   Size.—Upon opening, 30 mm in length from base of receptacle            to distal end of bud and 10 mm diameter at its widest point.        -   Texture.—Smooth.        -   Color, as sepals first unfold.—Red Group 47D.        -   Color when one-quarter open, inner side.—Red Group 53D.        -   Color when one-quarter open, outer side.—Red Group 53D.        -   Color, outermost petals.—Red Group 53D.-   Flower:    -   -   Pedicel.—Length — 20 to 40 mm average length. Diameter — 2.0            to 3.0 mm average diameter. Color — Yellow-Green Group 146C.            Anthocyanin intonations — None. Strength — Strong. Surface —            Smooth, with very fine hairs and occasionally with a very            limited number of stipitate glands.        -   Calyx.—General — Comprised of five polysepalous sepals, with            moderate foliaceous appendages present on three sepals.            Diameter of calyx — 55 mm, at anthesis. Sepals — Color,            upper surface — Yellow-Green Group 146B to 146C. Color,            lower surface — Yellow-Green Group 146B. Anthocyanin            intonations — None. Size — 35 mm long and 12 mm wide, on            average. Apex — Apiculate and cirrose. Base — Flat at union            with receptacle. Quantity — Five. Upper surface — Moderately            pubescent. Lower surface — With stipitate glands. Margins —            Pubescent; stipitate glands are occasionally present.            Stipitate glands, occurrence — Limited.        -   Corolla.—Habit — Very double. General shape of corolla —            Cup-open; deep. Shape of corolla when viewed from the side —            Upon opening, upper portion — Flat. Upon opening, lower            portion — Flattened convex. Open flower, upper portion —            Flat. Open flower, lower portion — Flattened convex.            Dimensions — Large size for a miniature rose. When open, the            average flower diameter is 90 mm and the average flower            height is 45 mm. Fragrance — Strong fruity and myrrh            fragrance. Duration — On the plant for 8 to 10 days; 3 to 5            days as a cut flower. Senesced petals drop away cleanly.            Petals — Petal count — Exhibits very double flowers with an            average of 80 to 90 petals under normal conditions. Petal            reflex — Petals are slightly reflexed. Timing of petal            reflex — Simultaneous. Petal margin — Entire. Petal shape —            Obovate. Apex — Obtuse. Base — Cuneate. Dimensions — 25 to            45 mm long and 10 to 40 mm wide. Texture, inner surface —            Smooth. Texture, outer surface — Smooth. Petal color, upon            opening — Outermost petals, inner surface — Red-Purple Group            N66C. Outermost petals, outer surface — Red-Purple Group            N66C. Innermost petals, inner surface — Red-Purple Group            58B. Innermost petals, outer surface — Red-Purple Group 58B.            Basal petal spots, upon opening — Outermost petals — Color,            inner surface — Green-Yellow Group 1B. Color, outer surface            — Yellow-Green Group 154D. Dimensions — 4 mm wide and 4 mm            tall. Innermost petals — Color, inner surface — Green-Yellow            Group 1D. Color, outer surface — White Group 155C.            Dimensions — 4 mm wide and 5 mm tall. Petal color, after            opening — Outermost petals, inner surface — Red-Purple Group            61C to 61D. Outermost petals, outer surface — Red-Purple            Group 61D. Innermost petals, inner surface — Red Group 54B.            Innermost petals, outer surface — Red-Purple Group 58C.            Basal petal spots, after opening — Outermost petals — Color,            inner surface — White Group 155A. Color, outer surface —            White Group 155A. Dimensions — 7 mm wide and 5 mm tall.            Innermost petals — Color, inner surface — White Group 155B.            Color, outer surface — White Group 155B. Dimensions — 5 mm            wide and 7 mm tall. General Tonality — On open flower,            Red-Purple Group 58C. No change in general tonality at the            end of the twelfth day; thereafter the general tonality is            Red-Purple Group 58D. Petaloids — Quantity — 15 petaloids            per flower, on average. Dimensions — Variable; approximately            5 to 20 mm long and 4 to 10 mm wide. Color, inner surface —            Red Group 53D. Color, outer surface — Red Group 53D. Margins            — Highly irregular; undulated to indented. Shape — Ovate to            obovate. Apex — Variable from cuspidate to obtuse. Base —            Attenuate. Texture, inner and outer surfaces — Smooth.-   Reproductive organs:    -   -   Stamens.—Quantity — Approximately 120, on average, arranged            around the styles. Anthers — Shape — Reniform. Dimensions —            3.0 mm long and 1.0 mm wide, on average. Color —            Yellow-Orange Group 20B. Pollen — Absent. Filaments — Color            — Yellow-Green Group 154D with intonations of Red Group 53C            on the upper half. Length — 5 mm.        -   Pistils.—Quantity — Average; approximately 35. Stigmas —            Size — Less than 1.0 mm. Location — Slightly inferior to            equal in position to anthers. Color — Red Group 53C with            tips Greyed-Yellow 161D. Styles — Length — Approximately 4.0            mm long. Color — White Group 155A, with intonations of Red            Group 53C. Ovary — Dimensions — 4 mm long and 3 mm in            diameter. Color — Green-White Group 157A.        -   Receptacle.—Shape — Urn-shaped. Dimensions — Approximately            14 mm high and 10 mm wide. Color — Yellow-Green Group 146C.            Texture — Smooth; glabrous.-   Hips and seed formation: Not observed.

COMPARISONS WITH THE PARENTS

The new rose plant may be distinguished from its seed parent, an unnamedRosa hybrida seedling, by the following combination of characteristics:

-   -   1. ‘KORaroma06’ exhibits deep pink flowers, whereas the seed        parent exhibits cream apricot flowers.    -   2. ‘KORaroma06’ exhibits flowers of medium size for a miniature        rose, whereas the seed parent exhibits large flowers.    -   3. ‘KORaroma06’ exhibits a moderately long shelf life as a        potted plant, whereas the seed parent exhibits a short shelf        life as a potted plant.

The new rose plant may be distinguished from its pollen parent, Rosahybrida ‘KORpot028’, by the following combination of characteristics:

-   -   1. ‘KORaroma06’ exhibits deep pink flowers, whereas the pollen        parent exhibits red flowers.    -   2. ‘KORaroma06’ exhibits flowers with strong fragrance, whereas        the flowers of the pollen parent are non-fragrant.    -   3. ‘KORaroma06’ exhibits a moderately long shelf life as a        potted plant, whereas the pollen parent exhibits an excellent,        extended shelf life as a potted plant.

COMPARISON WITH THE MOST SIMILAR ROSA CULTIVAR KNOWN TO THE INVENTOR

For a comparison, several physical characteristics of the Rosa hybridavariety ‘KORpot042’, unpatented, a rose variety from the same inventoris compared to ‘KORaroma06’ in Chart 1.

CHART 1 Characteristic ‘KORaroma06’ ‘KORpot042’ Bud color as sepalsunfold. Red Group 47D. Red Group 50B. Petal count. 80 to 90. 30 to 40.Fragrance. Strong. Non-fragrant.

That which is claimed:
 1. A new and distinct variety of rose plant named‘KORaroma06’, as described and illustrated herein.